Our people are our strength. They bring knowledge, experience and passion to our clients every day. They are engineers and explosives experts, scientists and researchers with the skills and the background to tackle a wide range of environmental and munitions issues.

David Nelson. Professional Geologist

David is a Professional Geologist with an extensive background leading projects and providing environmental expertise at Military Munitions Response Program (MMRP) sites. He also leads TLI Solutions’ Business Development team, working with clients and teaming partners to grow our environmental remediation and munitions response programs. He is an expert in the design and implementation of remediation systems for contaminated Hazardous, Toxic and Radioactive Waste (HTRW) sites; site assessment, characterization and remediation; environmental policy and regulatory analysis; vapor intrusion investigations; multi-media environmental compliance; industrial processes; waste management; and community relations and public communications. He has worked regularly with numerous Federal environmental regulatory programs including the National Environmental Policy Act (NEPA), CERCLA/SARA, RCRA, TSCA, the Clean Water Act (CWA), and the Clean Air Act (CAA). He is also active in several environmental and munitions-related organizations such as the National Association of Ordnance Contractors (NAOC) and the Atlanta and Savannah posts of the Society of American Military Engineers.

 

Patrick Tatman

Patrick Tatman, Munitions and Explosives of Concern (MEC)

Patrick is a former US Navy Explosives Ordnance Disposal (EOD) master instructor and technician with more than 20 years of experience in planning, performing, overseeing and training in Military Munitions Response (MMRP) activities related to Munitions and Explosives of Concern (MEC), Munitions Constituents (MC), Unexploded Ordnance (UXO) and Material Presenting a Potential Explosive Hazard (MPPEH). He has led international and domestic cross-functional programs supporting multiple private clients, state and federal agencies, including the U.S. Department of Defense, the U.S. Army Corps of Engineers, the U.S. Department of State and the U.S. Army Engineering Support Center. He has managed international and stateside mine action/UXO clearance, construction, environmental, and range-related programs and projects, overseeing safety, security and quality activities and leading environmental restoration initiatives utilizing CERCLA processes.

 

David Butler

Dave Butler, Groundwater Remediation and Regulatory Compliance

Dave has more than 20 years of experience providing groundwater monitoring, compliance, and permitting oversight for multiple industrial operations, landfill sites (hazardous and municipal), commercial projects, and oil and gas sites. He has expertise in geology/hydrogeology, RCRA, CERCLA and state regulatory permitting, Brownfields redevelopment and the design, implementation, and optimization of various remediation systems. He currently oversees remediation contracts at the U.S. Army Corps of Engineers site at the Pueblo (CO) Chemical Depot, leading projects involving remediation of soil and groundwater, including groundwater extraction optimization and source area remediation focused on the treatment of TCE and explosives.

 

Eric Middleditch

Eric Middleditch, Chemistry and Data Management

Eric is an environmental chemist and laboratory manager with extensive experience in programs and projects involving Hazardous, Toxic and Radioactive Waste (HTRW) and Munitions Remediation, including: theoretical and practical aspects of chemistry, field sampling, data management, laboratory analysis, risk assessments, laboratory coordination, data validation, and document preparation and review.  He has managed the collection, analysis and reporting of chemical data for investigation of chlorinated solvents, explosives, and per- and polyfluoroalkyl substances (PFAS), providing additional chemistry expertise at groundwater treatment facilities and with in-situ enhanced reductive dechlorination systems.